2006 YAMAHA YZ125LC transmission oil

4-41
ENG
KICK AXLE, SHIFT SHAFT AND PRIMARY DRIVE
GEAR
EC4C5000
ASSEMBLY AND INSTALLATION
EC4C5120
Stopper lever
1. Install:
9Torsion spring 1
9Stopper lever 2
9Bolt (stopper lever) 3
NOTE:
9Align the stopper lever roller with the slot on
segment.
9When installing the stopper lever, make sure
that the torsion spring is in the position as
shown.
EC4C5202
Shift guide and shift lever assembly
1. Install:
9Spring 1
9Pawl pin 2
9Pawl 3
To shift lever 4.
2. Install:
9Shift lever assembly 1
To shift guide 2.
3. Install:
9Shift lever assembly 1
9Shift guide 2
NOTE:
9The shift lever assembly is installed at the
same time as the shift guide.
9Apply the transmission oil on the bolt (segment)
shaft.
10 Nm (1.0 m•kg, 7.2 ft•lb)
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4-42
ENG
KICK AXLE, SHIFT SHAFT AND PRIMARY DRIVE
GEAR
4. Install:
9Bolt (shift guide) 1
EC4C5301
Shift shaft
1. Install:
9Roller 1
9Shift shaft 2
NOTE:
Apply the transmission oil on the roller and shift
shaft.
EC4B5302
Kick axle assembly
1. Install:
9Kick gear 1
9Plain washer 2
9Torsion spring 3
To kick axle 4.
NOTE:
Make sure the stopper aof the torsion spring
fits into the hole bon the kick axle.
2. Install:
9Spring guide 1
NOTE:
Slide the spring guide into the kick axle, make
sure the groove ain the spring guide fits on the
stopper of the torsion spring.
3. Install:
9Kick axle assembly 1
NOTE:
9Apply the transmission oil on the kick axle.
9Slide the kick axle assembly into the
crankcase, make sure the clip 2and kick axle
stopper afit into their home positions b, c.
10 Nm (1.0 m•kg, 7.2 ft•lb)
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4-43
ENG
KICK AXLE, SHIFT SHAFT AND PRIMARY DRIVE
GEAR
4. Hook:
9Torsion spring 1
NOTE:
Turn the torsion spring clockwise and hook into
the proper hole ain the crankcase.
EC4C5402
Kick idle gear
1. Install:
9Kick idle gear 1
9Plain washer 2
9Circlip 3
NOTE:
Apply the transmission oil on the kick idle gear
inner circumference.
EC4C5503
Primary drive gear
1. Install:
9Spacer 1
9Primary drive gear 2
9Bolt 3
NOTE:
Install the primary drive gear with its depressed
side toward you.
2. Install:
9Primary driven gear
Refer to “CLUTCH AND PRIMARY DRI-
VEN GEAR” section.
3. Tighten:
9Bolt (primary drive gear) 1
NOTE:
Place an aluminum plate abetween the teeth of
the primary drive gear 2and driven gear 3.
4. Install:
9Dowel pin 1
9Gasket [crankcase cover (right)] 2
48 Nm (4.8 m•kg, 35 ft•lb)
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4-47
ENGYPVS GOVERNOR
2. Install:
9Ball 1
9Retainer 2
To governor shaft 3.
NOTE:
Apply the transmission oil on the retainer and
ball.
3. Install:
9Dowel pin 1
NOTE:
9While compressing the spring, install the dowel
pin.
9Make sure the dowel pin fits into the groove a
in the retainer.
4. Install:
9Governor assembly 1
NOTE:
Align the groove ain the governor with the fork
band set the governor in the crankcase cover.
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4-49
ENGWATER PUMP
EC4G3000
REMOVAL POINTS
EC4G3210
Oil seal
NOTE:
9Replace the oil seal when transmission oil or
coolant leaks out from the water pump housing
hole at the bottom.
9Do not reuse the removed bearing and oil seal.
1. Remove:
9Bearing 1
2. Remove:
9Oil seal (outside) 1
9Oil seal (inside) 2
EC4G4000
INSPECTIONEC444200
Impeller shaft assembly
1. Inspect:
9Impeller shaft assembly1
Bend/Wear/Damage Replace.
Fur deposits Clean.
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8. Install:
9Segment 1
9Bolt (segment) 2
NOTE:
9When installing the segment onto the shift cam
3, align the punch mark awith the dowel pin
b.
9Turn the segment clockwise until it stops and
tighten the bolt.
cC
If the segment gets an impact, it may be
damaged. Take care not to give an impact
to the segment when tightening the bolt.
9. Remove:
9Sealant
Forced out on the cylinder mating surface.
10. Apply:
9Engine oil
To the crank pin, bearing, oil delivery hole
and connecting rod big end washer.
11. Check:
9Crankshaft and transmission operation
Unsmooth operation Repair.
NOTE:
If the crankshaft will not turn smoothly, make an
adjustment by gently tapping its right end with a
soft hammer.
4-68
ENGCRANKCASE AND CRANKSHAFT
30 Nm (3.0 m•kg, 22 ft•lb)
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4-71
ENGTRANSMISSION, SHIFT CAM AND SHIFT FORK
EC4H4801
Shift fork, shift cam and segment
1. Inspect:
9Shift fork 1
Wear/Damage/Scratches Replace.
2. Inspect:
9Shift cam 1
9Segment 2
9Guide bar 3
Bend/Wear/Damage Replace.
3. Check:
9Shift fork movement
On its guide bar.
Unsmooth operation Replace shift fork
and/or guide bar.
NOTE:
For a malfunctioning shift fork, replace not only
the shift fork itself but the two gears each adja-
cent to the shift fork.
EC4H5000
ASSEMBLY AND INSTALLATION
EC4H5213
Transmission
1. Install:
96th pinion gear (21T) 1
93rd/4th pinion gear (17T/17T) 2
95th pinion gear (20T) 3
92nd pinion gear (15T) 4
To main axle 5.
NOTE:
Apply the molybdenum disulfide oil on the inner
and end surface of the idler gear and on the
inner surface of the sliding gear, then install.
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4-72
ENGTRANSMISSION, SHIFT CAM AND SHIFT FORK
2. Install:
92nd wheel gear (29T) 1
95th wheel gear (24T) 2
93rd wheel gear (27T) 3
94th wheel gear (23T) 4
96th wheel gear (23T) 5
91st wheel gear (31T) 6
To drive axle 7.
NOTE:
Apply the molybdenum disulfide oil on the inner
and end surface of the idler gear and on the
inner surface of the sliding gear, then install.
3. Install:
9Plain washer 1
9Circlip 2
NOTE:
9Be sure the circlip sharp-edged corner ais po-
sitioned opposite side to the plain washer and
gear b.
9Be sure the circlip end cis positioned at axle
spline groove d.
4. Install:
9Spacer 1
NOTE:
9Apply the lithium soap base grease on the oil
seal lip.
9When installing the spacer into the crankcase,
pay careful attention to the crankcase oil seal
lip.
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